Onkyo TX-NR545 User Manual - Page 6

and the other type is designed to be integrated with normal speakers. Dolby Enabled Speakers placed with their diaphragms facing toward the ceiling create higher effect in the Dolby Atmos and Dolby Surround listening modes by providing sounds echoing off the ceiling. You can select (g)(h) or (i)(j) on the unit. For connection with the unit, use the SPEAKERS BACK or HEIGHT terminals. When playing Dolby Atmos, the speakers required depend on how you have setup your back speakers or height speakers. The following shows combinations of speakers for reproducing Dolby Atmos. Connection pattern 1 2 3 4 5 6 7 8 Back or Height Back Front High Rear High Top Front Top Middle Top Rear Dolby Enabled Speaker (Front) Dolby Enabled Speaker (Surround) : Required, : Optional  Connection of a subwoofer is optional. Front CenterSurround Important: Connect speakers with 6 Ω to 16 Ω impedance. Using a speaker with less impedance than the supported value may result in failure. 8FH Right back Or right height # Front R $ Center " Front L Step 1: Connections 79G Left back Or left height A speaker configuration where only one back speaker is connected is not supported. En-6 ' Subwoofer with built-in power amplifier & Surround R % Surround L